﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace lazy02
{
    class Shape
    {
        private string color;
        public string Color {
            get { return this.color; }
            set { this.color = value; }
        }
        public virtual void GetArea(double a) {
            Console.WriteLine("运行中：");
        }
    }
}
